So you'd better use a professional third-party Mac file compressor - Cisdem Unarchiver to help you compress large files and folders. Secondly, the Mac's built-in compression and decompression option uses the ZIP format, and if the files are large, you won't be able to use your Mac operating system's built-in compression tool to compress them. This feature works best with medium size files - compressing lots of small files or one or two big files won't save you much space. Generally speaking, a zip file will be about 10% smaller than all of the files were before compressing. Firstly, you have to understand that not all files can be compressed by a significant amount and you may not be able to compress a file much smaller than its original size. Things you need to know before compressing files and foldersīefore you start to compress files and folders, there are two things you have to know. But don't worry! Here I'll show you how to use Mac's built-in file compression tool and a highly recommended Mac file compressor to compress files or folders on Mac. In general, compressing files in modern operating systems is a complex technique to learn.

If you have lots of large files or folders on your Mac, it is wise to compress them in order to get more free space, for compressed files take up less space on your Mac's hard disk than uncompressed files.

Free file compression for mac